Tire Sizes: What You Need to Know

Your tires have a size to them. It's printed on the side of the tire in a special code of letters and numbers. The first letter is "P" which stands for passenger. The second letter, after the first slash, is "R" which is for radial construction. The first three-digit number is the width of the tire, measured in millimeters. The two-digit number after the slash is the aspect ratio and the one after that is the diameter of the wheel, measured in inches.

If you need tires in Derby, it's important to know the tire size to ensure it's in stock. At Northpoint Chrysler Dodge Jeep Ram, our service center can help you with new tires, rotations, and more. We may even ask you the tire size over the phone when you make an appointment.